/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Polygroups/PolygroupUtil.h
unique group layer name derived from BaseName by appending a numeric suffix in the form _0, _1, etc
namespace UE { namespace Geometry { [FString](API\Runtime\Core\Containers\FString) UE::Geometry::MakeUniqueGroupLayerName ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) & Mesh, [FString](API\Runtime\Core\Containers\FString) BaseName ) } }